B&B Electronics MESR321 Datasheet

B&B Electronics
Brand
B&B Electronics
Model
MESR321
Category
Serial servers
Type
Datasheet

B&B Electronics MESR321 is an Isolated Industrial Modbus Ethernet to Serial Gateway that connects Modbus devices to Ethernet networks. It enables monitoring and controlling of Modbus devices from anywhere on the Ethernet LAN or WAN. With support for up to 16 masters and 32 slaves, the gateway offers flexibility in network configuration. The MESR321 features auto-detecting Ethernet ports, including copper and fiber optic options, ensuring compatibility with various network setups.

The three-way isolation feature enhances the reliability and safety of the system by isolating the serial ports, Ethernet ports, and power supply from each other. This isolation protects against electrical interference and ensures stable operation in industrial environments.

B&B Electronics MESR321 is an Isolated Industrial Modbus Ethernet to Serial Gateway that connects Modbus devices to Ethernet networks. It enables monitoring and controlling of Modbus devices from anywhere on the Ethernet LAN or WAN. With support for up to 16 masters and 32 slaves, the gateway offers flexibility in network configuration. The MESR321 features auto-detecting Ethernet ports, including copper and fiber optic options, ensuring compatibility with various network setups.

The three-way isolation feature enhances the reliability and safety of the system by isolating the serial ports, Ethernet ports, and power supply from each other. This isolation protects against electrical interference and ensures stable operation in industrial environments.

Isolated Industrial Modbus
Ethernet to Serial Gateways
MESR321 Series
• Three-wayisolation
• Ethernet-enableModbusRS-232/422/485
• ModbusTCP,ASCII&RTU
• Modbusexibility–serial&Ethernet,masters&slaves
• Viewmessagingstatusinrealtime
• Ethernetberoptions
• Easycongurationsoftware
Vlinx
™
MESR321 series Modbus Gateways connect Modbus devices to
Ethernet networks and let you monitor and control your Modbus devices
from anywhere on your Ethernet LAN or WAN. Supporting up to 16 masters
and 32 slaves, the gateways feature auto-detecting SP 10/100 copper and/
or fiber optic options that include multi-mode LC and single-mode LC. The
data ports are isolated from one another and also from the power supply.
The easy to use Vlinx software is compatible with Windows 2003 Server,
XP, Vista, Win 7 and Windows Server 2008. It features Modbus messaging
priority control and allows management through multiple TCP/IP client
sessions. Serial data rates of up to 230 kbps ensure maximum network
flexibility.
Featuring a slim IP30 DIN rail mountable case, MESR321 series gateways
are built for use in industrial environments. They can be powered via a
barrel connector or a terminal block. (An external power supply is required;
sold separately.) The MESR321 has an additional Ethernet port which
functions much like an Ethernet Switch, allowing pass-through connectivity
for other Ethernet devices. This port can also be used to “daisy chain”
multiple gateways.
PRODUCT FEATURES
ORDERING INFORMATION
MODEL NUMBER
SERIAL PORT
WITH
DB9 AND
TERMINAL
BLOCK
ETHERNET
PORTS
FIBER PORTS
MESR321 1 2 (RJ45) 0
MESR321-ML 1 1 (RJ45) 1 LC multi-mode optical
MESR321-SL 1 1 (RJ45) 1 LC single-mode optical
ACCESSORIES
C5UMB7FBG - Category 5e, 7 ft. (2.1 m), Grey cable
PS12VLB-INT-MED - Power Supply 12Vdc, Medical Grade - US, EU, UK
MDR-40-24 - DIN rail mount power supply 24VDC, 1.7 A output power
MECHANICAL DIAGRAM
8.633 cm
3.399 in
3.500 cm
1.378 in
13.823 cm
5.442 in
MESR321
MESR321-ML,
MESR321-SL
* Fiber Product
Options
www
.
bb
-
elec
.
com
|
MESR321 Series_3713ds
* Full Fiber Product Options
These options are possible for large projects:
•Modelswith2beropticports
•Modelswithlong-rangeberopticports
such as 40km and 80km single-mode
Contact B&B Electronics for more information.
Isolated Industrial Modbus
Ethernet to Serial Gateways
MESR321 Series
SOFTWARE CONFIGURATION
Vlinx Manager
Win XP (32/64 bit), 2003 Server (32/64 bit), Vista (32/64
bit), 2008 Server (32/64 bit), Win 7 (32/64 bit), Windows
2008 Server
ETHERNET PASS-THROUGH PORT
Standards IEEE 802.3, 802.3u, 802.3x
Processing Type
Store and Forward with 802.3x full duplex, non blocking
flow control
Flow Control IEEE 802.3x flow control, back pressure flow control
MAC Address Table 2K
SERIAL TECHNOLOGY
RS-232 TD, RD, RTS, CTS, DTR, DSR, DTD, Signal Ground
RS-485 2-Wire Data A(-), Data B(+), Signal Ground
RS-422/485 4-Wire TDA(-), TDB(+), RDA(-), RDB(+), Signal Ground
Serial Connector DB9M RS-232, Terminal Block Rs-422/485
Data Rate Up to 230.4 Kbps
APPROVALS / CERTIFICATIONS
Emissions FCC Class B, CISPR Class B (EN55022)
CE EN61000-6-2:2005 (Heavy Industrial)
EN61000-4-2:2008 (ESD)
EN61000-4-3:2006 (RI)
EN61000-4-4:2004 (EFT Burst)
EN61000-4-5:2005 (Surge)
EN61000-4-6:2005 (CI)
EN61000-4-8:2001 (Magnetic)
Shock IEC60068-2-27 50G peak, 11ms, 3 axes
Vibration IEC60068-2-6 10-500Hz, 4G, 3 axes
Freefall
(Drop)
IEC60068-2-32 10 total drops from sides, corner and edges, 1M
FIBER OPTIC SPECIFICATIONS
MODE AND DISTANCE WAVELENGTH OUTPUT POWER
RECEIVE
SENSITIVITY
Multi-mode (2 km) 1310 nm -23 to -14 dBm </= -31 dBm
Single-mode (15 km) 1310 nm 15 to -8 dBm </= -34 dBm
Single-mode (40 km) 1310 nm -5 to 0 dBm </= -35 dBm
Single-mode (80 km) 1550 nm -5 to 0 dBm </= -34 dBm
SPECIFICATIONS
PORT TO PORT ISOLATION
Serial to Ethernet 2 kV
Serial to Power 2 kV
Ethernet to Power 1.5 kV
POWER
Source External
Input Voltage 10 to 48 VDC (58 VDC Maximum)
Connector
Removable Terminal Block (12 – 28 AWG and barrel
connector
Power Consumption 4 W
MECHANICAL
LED Indicators Ready, Power, Serial Data, Ethernet Speed, Ethernet Link
Switches Reset Button (Mode)
Dimensions 13.823 x 8.633 x 3.500 cm (5.442 x 3.399 x 1.378 in)
Enclosure IP 30, Metal
WEIGHT 635 G (1.4 LBS)
ENVIRONMENTAL
Operating Temperature -40 to 80°C (-40 to 176°F)
Operating Humidity 10 to 95% Non-condensing
Storage Temperature -40 to 85°C
MTBF 86,882 hours
MTBF Calc Method
Based on MIL 217F using Parts Count Reliability
Prediction
NETWORK
Serial Memory 8 KB per port
Network Memory 8 KB
IP Port Addresses
Setting in TCP Mode (paired mode)
8899 – MESR321x Update
LAN 10/100 Mbps Auto-detecting, 10BaseT or 100BaseTX
Ethernet
IEEE 802.3 auto detecting & auto MDI/MDX, 10BaseT
and 100Base TX
PROTOCOLS
Protocols TCP, IPv4, UDP, ARP, HTTP 1.0, ICMP/PING, DHCP/BOOTP
IP Mode Static, DHCP
TCP User definable
OTHER
Connection Mode Modbus RTU Master/Slave, Modbus ASCII Master/Slave
Search Serial direct COM and Ethernet Auto Search or specific IP
Diagnostics
Display PC IP, ping, test VCOM, save test config (text
readable)
Firmware Upgrade Vlinx Manager
8.633 cm
3.399 in
3.500 cm
1.378 in
13.823 cm
5.442 in
MESR321
MESR321-ML,
MESR321-SL
* Fiber Product
Options
International Office: 707 Dayton Road PO Box 1040 Ottawa, IL 61350 USA 815-433-5100 Fax 433-5104
European Office: Westlink Commercial Park Oranmore Co. Galway Ireland +353 91 792444 Fax +353 91 792445
orders@bb-elec.com
support@bb-elec.com
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B&B Electronics MESR321 Datasheet

B&B Electronics
Brand
B&B Electronics
Model
MESR321
Category
Serial servers
Type
Datasheet

B&B Electronics MESR321 is an Isolated Industrial Modbus Ethernet to Serial Gateway that connects Modbus devices to Ethernet networks. It enables monitoring and controlling of Modbus devices from anywhere on the Ethernet LAN or WAN. With support for up to 16 masters and 32 slaves, the gateway offers flexibility in network configuration. The MESR321 features auto-detecting Ethernet ports, including copper and fiber optic options, ensuring compatibility with various network setups.

The three-way isolation feature enhances the reliability and safety of the system by isolating the serial ports, Ethernet ports, and power supply from each other. This isolation protects against electrical interference and ensures stable operation in industrial environments.

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